It is possible for most tourists to obtain an entry visa wich is valid for up to three months at any of the major ports of entry.
Visitors entering Egypt at the overland border post to Taba (from Israel) to visit Gulf of Aqaba coast and St. Catherine can be exempted from visa and granted a free residence permit for fourteen days to visit the area.
The following nationals are exempt from having to have a visa when visiting Egypt:
Bahrain
Jordan
Kuwait
Libya
Oman
Saudi Arabia
Syria
United Arab Emirates
Citizens of the following countries are required to be in possession of a pre-arrival visa:
Afghanistan
Algeria
Armenia
Azerbaijan
Bangladesh
Bosnia Herzegovina
Chechnya
Croatia
Georgia
India
Indonesia
Iraq
Iran
Israel
Kazakhstan
Lebanon
Macau
Macedonia
Malaysia
Moldavia
Montenegro
Morocco
Pakistan
Palestine
Philippines
Russia
Serbia
Slovenia
Sri-Lanka
Thailand
Tunisia
Turkmenistan
Ukraine
Uzbekistan
All African countries
If you are not arriving by air or sea (red sea), then you may need to organize a visa beforehand. i.e. people traveling overland from Sudan, you will need to arrange a visa beforehand.